Import Geant4 0.1.0 source tree

source/materials/src/G4MPVEntry.cc

@@ -5,8 +5,8 @@
 // based on the Program) you indicate your acceptance of this statement,
 // and all its terms.
 //
-// $Id: G4MPVEntry.cc,v 2.1 1998/07/13 17:14:08 urbi Exp $
-// GEANT4 tag $Name: geant4-00 $
+// $Id: G4MPVEntry.cc,v 1.2 1999/04/14 12:49:02 maire Exp $
+// GEANT4 tag $Name: geant4-00-01 $
 //
 // 
 ////////////////////////////////////////////////////////////////////////
@@ -61,11 +61,12 @@ G4bool G4MPVEntry::operator <(const G4MPVEntry &right) const
 // -----------------------
 // Well defined = semantics required by RWTPtrSortedVector
 //
-G4MPVEntry& G4MPVEntry::operator =(const G4MPVEntry &right)
+G4MPVEntry& G4MPVEntry::operator =(const G4MPVEntry& right)
 {
+        if (this == &right) return *this;
+	
         thePhotonMomentum = right.thePhotonMomentum;
         theProperty = right.theProperty;
-
         return *this;
 }